题目内容
20.-How long _________ at this job?-Since 1990.( )
A. | had you been employed | B. | have you been employed | ||
C. | were you employed | D. | will you be employed |
分析 你做这项工作多久了?
自1990.
解答 答案是B. 考查被动语态,回答里有since,since引导了一个时间状语,前句就用have+过去分词;由于是被雇佣,所以用表被动的 have been employed,所以答案选B.
点评 被动语态由"助动词be+及物动词的过去分词"构成.被动语态的时态变化只改变be的形式,过去分词部分不变.疑问式和否定式的变化也如此.掌握各种时态的被动语态是解题的关键.
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